Home / 528,724.32-729,651.89-313,865.21

Finding the Fourth Proportional to 528,724.32, 729,651.89 and 313,865.21

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Solution

The fourth proportional to 528,724.32, 729,651.89 and 313,865.21 is: 433,141.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,724.32 : 729,651.89 = 313,865.21 : x
  2. Step 2: Convert to fraction form
    528,724.32/729,651.89 = 313,865.21/x
  3. Step 3: Cross multiply
    528,724.32x = 729,651.89 × 313,865.21
  4. Step 4: Simplify right side
    528,724.32x = 229,012,340,818.15
  5. Step 5: Solve for x
    x = 229,012,340,818.15/528,724.32
  6. Step 6: Final answer
    x = 433,141.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.